I'm considering buying a second hand Kaoss pad quad version for around 80,- euro's which seems like good value for money to me, but am not sure how much recording time the 'looper' option offers, can anyone tell me?

All the review video's I see loop around 4 beats = 1 bar amount of sound, and I hope getting more sample time out of it.
Also, is it possible to re-record the output for overdubbing kind of layering effects?
Cheers,
R